Valve structure and shock absorber

By employing a valve core design in the shock absorber that includes two elastic structures with different stiffnesses, the problems of throttling and large structural size in the shock absorber are solved, thereby improving the comfort and safety of the vehicle.

CN122328486APending Publication Date: 2026-07-03ZHEJIANG SENSEN AUTOMOBILE PARTS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG SENSEN AUTOMOBILE PARTS CO LTD
Filing Date
2026-06-04
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Existing shock absorbers exhibit throttling when adjusting the flow of damping fluid, resulting in insufficient vehicle comfort and handling stability. Furthermore, their large structural dimensions make them inconvenient to install.

Method used

The valve core design employs a two-part elastic structure with different stiffnesses. The valve core movement is controlled by electromagnetic driving force to form a continuous flow channel, avoiding throttling. When the electromagnetic power is cut off, the elastic structure with different stiffnesses provides damping performance, achieving at least two damping force characteristics.

Benefits of technology

The valve structure has been reduced in size along the axial direction, improving the driving experience and safety, achieving low damping force performance in a comfortable state, and providing effective damping performance in emergency situations.

✦ Generated by Eureka AI based on patent content.

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    Figure CN122328486A_ABST
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Abstract

A valve structure and a vibration damper are disclosed. The valve structure includes a valve sleeve, a valve seat structure, a first valve core, a second valve core, and an elastic structure. The valve sleeve has a fluid discharge channel, and the valve seat structure is disposed opposite to the valve sleeve along the extension direction of the valve sleeve's axis. The elastic structure is pre-compressed between the first valve core and the valve sleeve along the extension direction of the axis, and the elastic structure includes two parts with different stiffnesses along the extension direction of the axis. The side of the valve seat structure away from the valve sleeve includes a channel opening. The valve structure includes a continuous flow channel from the surface of the first valve core toward the valve seat structure to the channel opening, and the cross-sectional area of ​​any segment of the continuous flow channel is not less than the area of ​​the channel opening. During its reciprocating motion, the first valve core forms a variable flow opening with the valve seat structure, and the continuous flow channel communicates with the fluid discharge channel through at least one of the variable flow opening and the internal flow channel of the first valve core. This improves the driving experience and enhances the safety of the valve structure.
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